diff options
Diffstat (limited to 'sys/arch/i386/stand/biosboot/biosboot.8')
| -rw-r--r-- | sys/arch/i386/stand/biosboot/biosboot.8 | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/sys/arch/i386/stand/biosboot/biosboot.8 b/sys/arch/i386/stand/biosboot/biosboot.8 new file mode 100644 index 00000000000..270a099a72d --- /dev/null +++ b/sys/arch/i386/stand/biosboot/biosboot.8 @@ -0,0 +1,130 @@ +.\" $OpenBSD: biosboot.8,v 1.2 1997/03/31 03:12:00 weingart Exp $ +.\" $NetBSD: boot_i386.8,v 1.3 1995/04/23 10:33:35 cgd Exp $ +.\" +.\" Copyright (c) 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software written and contributed +.\" to Berkeley by William Jolitz. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)boot_i386.8 8.2 (Berkeley) 4/19/94 +.\" +.Dd April 19, 1994 +.Dt BOOT 8 i386 +.Os +.Sh NAME +.Nm boot +.Nd +system bootstrapping procedures +.Sh DESCRIPTION +.Sy Power fail and crash recovery. +Normally, the system will reboot itself at power-up or after crashes. +An automatic consistency check of the file systems will be performed, +and unless this fails, the system will resume multi-user operations. +.Pp +.Sy Cold starts. +The 386 +.Tn "PC AT" +clones attempt to boot the floppy disk drive A (otherwise known as drive +0) first, and failing that, attempt to boot the hard disk C (otherwise +known as hard disk controller 1, drive 0). +The automatic boot will attempt to load +.Pa bsd +from partition A of either the floppy or the hard disk. +This boot may be aborted by typing any character on the keyboard repeatedly +(four or five times at least) during the operating system load phase, after +which the bootstrap will prompt for the file that you wish to load instead. +.Pp +One exception to this is the +.Ql d +key, which will not abort the load but instead silently force the +.Dv DEBUG +boot flags. +The boot flags for an autoboot are 0, and 3 for the successive boot after +an aborted autoboot sequence. +No other provison is made for setting boot flags (yet). +A specific device or bootstrap file may be used; for example, +.Pp +The file specifications used for the boostrap +when loaded with the +.Dq askme +flag +(e.g. an aborted autoboot) +are of the form: +.Pp +.Dl device unit partition: +.Pp +where +.Ar device +is the type of the device, assumed to be on the ISA bus, to be searched, +.Ar unit +is the unit number of the disk or tape, +and +.Ar partition +is the disk partition or tape file number. +Normal line editing characters can be used when typing the file specification. +The following list of supported devices may vary from installation to +installation: +.Bd -unfilled -offset indent +wd ST506, IDE, ESDI, RLL disks on a WD100[2367] or lookalike + controller +fd 5 1/4" or 3 1/2" High density floppies +.Ed +.Pp +For example, +to boot from a file system which starts at cylinder 0 +of unit 0 of an IDE disk, type +.Dq Li wd(0,a)/bsd +to the boot prompt; +.Dq Li fd(0,a)/bsd +would specify a 3 1/2" floppy drive 0 . +.Pp +In an emergency, the bootstrap methods described in the paper +.%T "Installing and Operating 4.3 BSD-Reno UNIX on the AT/386" +can be used +to boot from a distribution tape. +.Sh FILES +.Bl -tag -width /bsdxx -compact +.It Pa /boot +system bootstrap +.It Pa /bsd +system code +.El +.Sh SEE ALSO +.Xr boot 8 , +.Xr halt 8 , +.Xr reboot 8 , +.Xr shutdown 8 +.Sh BUGS +The disklabel format used by this version of +.Bx +is quite +different from that of other architectures. |